https://git.reactos.org/?p=reactos.git;a=commitdiff;h=543d3902599e98401dae73ca690f89b93b6d8d7d
commit 543d3902599e98401dae73ca690f89b93b6d8d7d Author: Thomas Faber <[email protected]> AuthorDate: Sat Jan 14 16:36:57 2023 -0500 Commit: Thomas Faber <[email protected]> CommitDate: Sat Jan 14 17:52:17 2023 -0500 [NTOS:IO] Handle missing device instance in IopInitializeBuiltinDriver. CORE-18793 --- ntoskrnl/io/iomgr/driver.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/ntoskrnl/io/iomgr/driver.c b/ntoskrnl/io/iomgr/driver.c index 61ac27ed25b..498b09ea40f 100644 --- a/ntoskrnl/io/iomgr/driver.c +++ b/ntoskrnl/io/iomgr/driver.c @@ -967,9 +967,16 @@ IopInitializeBuiltinDriver(IN PLDR_DATA_TABLE_ENTRY BootLdrEntry) instancePath.Buffer[instancePath.Length / sizeof(WCHAR)] = UNICODE_NULL; PDEVICE_OBJECT pdo = IopGetDeviceObjectFromDeviceInstance(&instancePath); - PiQueueDeviceAction(pdo, PiActionAddBootDevices, NULL, NULL); - ObDereferenceObject(pdo); - deviceAdded = TRUE; + if (pdo != NULL) + { + PiQueueDeviceAction(pdo, PiActionAddBootDevices, NULL, NULL); + ObDereferenceObject(pdo); + deviceAdded = TRUE; + } + else + { + DPRINT1("No device node found matching instance path '%wZ'\n", &instancePath); + } } ExFreePool(kvInfo);
